Problem is your trying to compare two different things. There is a difference between someone failing the eye test and the statistics saying otherwise or vice versa, as opposed to trying to use some statistics to project qualities into the future when the two environments are not equivalent (college vs NBA). The main focus of the article is Kawhi's offense, particularly is PPP which often doesn't translate well from college into the NBA, however things like rebounding, steals, and defense generally are good indicators and carryover from college to the NBA.
Side note: Didn't Kawhi play mostly PF in college? If so, the fact all of his stats are being compared to guards (even if he is playing on the perimeter as a SF) is a bit strange.